KR0140563B1 - Fuel injector of an engine - Google Patents
Fuel injector of an engineInfo
- Publication number
- KR0140563B1 KR0140563B1 KR1019950050222A KR19950050222A KR0140563B1 KR 0140563 B1 KR0140563 B1 KR 0140563B1 KR 1019950050222 A KR1019950050222 A KR 1019950050222A KR 19950050222 A KR19950050222 A KR 19950050222A KR 0140563 B1 KR0140563 B1 KR 0140563B1
- Authority
- KR
- South Korea
- Prior art keywords
- air
- air inlet
- engine
- injection valve
- fuel
- Prior art date
Links
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
- F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
- F02M61/20—Closing valves mechanically, e.g. arrangements of springs or weights or permanent magnets; Damping of valve lift
- F02M61/205—Means specially adapted for varying the spring tension or assisting the spring force to close the injection-valve, e.g. with damping of valve lift
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
- F02M61/04—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00 having valves, e.g. having a plurality of valves in series
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
- F02M2200/50—Arrangements of springs for valves used in fuel injectors or fuel injection pumps
Abstract
본 발명은 엔진의 실리더측에 연료를 공급하는 연료 분사장치를 관한 것으로, 특히 스로틀 바디에 1, 2차 분사뱁브를 설치하여 엔진의 회전속도와 부하조건에 따라 적절한 혼합기를 공급할 수 있도록 한 엔진연료 분사장치에 관한 것으로, 상부 일측에 공기입구(20a)를 구비한 스로틀 바디(20)의 상부에 가속 케이블(23)의 의해 공기 흡입구(20b)를 개폐 작동하는 탄두형의 공기 조절밸브(21)가 설치되고, 이 상기 공기흡입구(20b)의 하방에 컴퓨터 제어장치에 의해 동작하는 1차분사밸브(24)와 2차분사밸브(25) 를 장착하고 상기 공기 입구(20a)와 공기흡입구(20b)에 연통된 에어블리드(20c)을 상기 2차 분사밸브(25)를 경유 하도록 하여서 된 것을 특징으로 한다.The present invention relates to a fuel injector for supplying fuel to a cylinder side of an engine, and in particular, by installing primary and secondary injection valves on a throttle body so as to supply an appropriate mixer according to the rotational speed and load conditions of the engine. Regarding a fuel injector, a warhead-type air regulating valve (21) for opening and closing an air inlet (20b) by an acceleration cable (23) on an upper portion of a throttle body (20a) having an air inlet (20a) on an upper side thereof. Is installed, and below the air inlet 20b, a primary injection valve 24 and a secondary injection valve 25 operated by a computer control device are mounted, and the air inlet 20a and the air intake port ( It is characterized in that the air bleed (20c) communicated to 20b) via the secondary injection valve (25).
Description
제1도는 종래 분사장치의 단면도.1 is a cross-sectional view of a conventional injector.
제2도는 본 발명의 실시예에 의한 분사장치의 정단면도.Figure 2 is a front sectional view of the injector according to the embodiment of the present invention.
*도면의 주요 부분에 대한 부호의 설명* Explanation of symbols for the main parts of the drawings
20:스로틀바디 20a:공기입구20: Throttle body 20a: Air inlet
20b:공기흡입구20c:에어블리드20b: Air intake 20c: Air bleed
21:공기조절밸브 22:리턴스프링21: Air control valve 22: Return spring
23:가속케이블 24:1차분사밸브23: acceleration cable 24: 1st injection valve
25:2차분사밸브25: 2nd injection valve
본 발명은 엔진의 실린더측에 연료를 공급하는 연료 분사장치에 관한 것으로, 특히 스로를 바디에 1, 2차 분사밸브를 설치하여 엔진의 회전속도와 부하조건에 따라 적절한 혼합기를 공급할 수 있도록 한 엔진연료 분사장치에 관한 것이다.The present invention relates to a fuel injector for supplying fuel to a cylinder side of an engine, and in particular, an engine in which a thrower is installed on a body to supply an appropriate mixer according to the rotational speed and load conditions of the engine. It relates to a fuel injector.
종래에는 제 1도에 도시한 바와 같이 스로를 바디(10)의 상부에 연료를 분사하는 인젝터(11)가 설치되고, 상부 일측에 흡기 매니폴드(도시안됨)의 부압에 대하여 상기 인젝터(11)에 가해지는 압력이 항상 일정치를 조정하는 압력 레귤레이터(12)가 설치되고, 상기 인젝터(11)의 하방에 연료의 흡입량을 조정하는 스로를 밸브(13)가 설치되어 있다.Conventionally, as shown in FIG. 1, an injector 11 is provided for injecting fuel into an upper portion of a body 10 through a throw, and the injector 11 is provided with respect to a negative pressure of an intake manifold (not shown) on an upper side. The pressure regulator 12 which always adjusts a constant value to the pressure applied to it is provided, and the valve 13 is provided below the injector 11 to adjust the suction amount of fuel.
이같이 구성된 종래의 단점 분사방식(Single Point Injection)은 한 개의 인젝터(11)가 ECU(전자제어장치)의 제어신호에 따라 연료를 분사하게 되면 유입된 공기와 혼합되고, 이 혼합기는 스로를 밸부(13)의 개폐조정에 따라 공급량이 결정되도록 되어 있다.The conventional drawback injection method (Single Point Injection) configured as described above is mixed with the introduced air when one injector 11 injects fuel in accordance with the control signal of the ECU (electronic control device), and the mixer is configured to set the throw unit. Supply quantity is decided by opening / closing adjustment of 13).
이와같이 한 개의 인젝터(11)를 사용하는 단점분사방식은 엔진의 회전속도와 부하의 조건 등에 대응하여 연료량만을 제어하기 때문에 적절한 혼합기 즉, 무화상태 혼합기의 공급이 어렵다.As described above, the disadvantageous injection method using one injector 11 controls only the fuel amount in response to the rotational speed of the engine and the conditions of the load, so that it is difficult to supply a suitable mixer, that is, a atomizer.
따라서 본 발명은 상기와 같은 문제점을 해결하기 위한 것으로, 그 목적은 엔진의 운전조건에 따라 적절한 혼합기가 공급되도록 한 엔진연료 분사장치를 제공함에 있다.Accordingly, the present invention is to solve the above problems, an object of the present invention is to provide an engine fuel injection device to be supplied with a suitable mixer in accordance with the operating conditions of the engine.
상기의 목적을 달성하기 위한 본 발명의 구체적인 수단은, 상부 일측에 공기입구를 구비한 스로를 바디의 상부에 가속 케이블에 의해 공기 흡입구을 개폐 작동하는 탄두형의 공기 조절밸부가 설치되고, 이 상기 공기흡입구의 하방에 컴퓨터 제어장치에 의해 동작하는 1차분사밸브와 2차분사밸브를 장착하고 상기 공기 입구와 공기흡입구에 연통된 에어블리드를 상기 2차 분사밸브를 경유 하도록 하여서 된 것을 특징으로 한다.Specific means of the present invention for achieving the above object, is provided with a warhead-type air control valve for opening and closing the air inlet port by the acceleration cable in the upper part of the body having an air inlet on the upper one side, the air A primary injection valve and a secondary injection valve operated by a computer control device are installed below the intake port, and the air bleed communicated with the air inlet and the air intake port is passed through the secondary injection valve.
이하, 본 발명의 바람직한 실시예를 첨부된 도면을 참조하여 상세히 설명한다.Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.
제2도에 도시한 바와 같이 상부 일측에 에어필드(도시안됨)측과 연결되는 공기입구(20a)를 구비한 스로틀 바디(20)의 상부에 탄두형의 공기조절밸부(21)가 설치되고, 이 공기조절밸브(21)는 리턴스프링(22)에 의해 하방으로 항시 탄력 가세되도록 설치됨과 동시에 가속페달(도시안됨)에 의해 당김되는 가속 케이블(23)에 연결되어 공기흡입구(20b)를 개폐 가능하도록 되어있다.As shown in FIG. 2, a warhead type air control valve 21 is installed on the upper portion of the throttle body 20 having an air inlet 20a connected to an air field (not shown) side on one upper side thereof. The air control valve 21 is installed to be always elastically downward by the return spring 22 and is connected to an acceleration cable 23 which is pulled by an accelerator pedal (not shown) to open and close the air intake 20b. It is supposed to.
그리고 상기 공기흡입구(20b)의 하방 양측으로 각각의 1차분사밸브(24)와 2차분사밸브(25)가 장착되어 있다.The primary injection valves 24 and the secondary injection valves 25 are mounted to both sides of the air inlet 20b.
상기 1,2차 분사밸브(24,25)는 차량에 탑재된 컴퓨터 제어장치(ECU)를 통하여 작동되도록 되어 있다. 즉, 상기 1차분사밸브(24)는 엔진의 정상운전시 즉, 주행시에 연료가 분사되고, 2차분사밸브(25)는 공회전시 단독으로 작동하고, 부분 부하시에 1차 분사 밸브(24)와 함께 작동하여 연료를 분사하도록 되어 있다.The primary and secondary injection valves 24 and 25 are operated through a computer control unit (ECU) mounted on a vehicle. That is, the primary injection valve 24 is injected with fuel during the normal operation of the engine, that is, the driving, the secondary injection valve 25 is operated independently at idle, the primary injection valve 24 at partial load To inject fuel.
한편, 상기 2차분사밸브(25)가 조립된 부분의 스로틀 바디(20)에는 2차분사밸브(25)가 분사하는 연료와 함께 연료의 무화를 촉진하는 에어블리드(20c)가 상기 공기입구(20a)와 공기흡입구(20b)측에 연통되어 있다.On the other hand, in the throttle body 20 of the part in which the secondary injection valve 25 is assembled, an air bleed 20c for promoting atomization of fuel together with fuel injected by the secondary injection valve 25 includes the air inlet ( It communicates with 20a) and the air intake opening 20b side.
이와같이 구성된 본 실시예의 작동상태를 살펴본다.It looks at the operating state of this embodiment configured as described above.
엔진의 정상운전시에는 컴퓨터 제어장치를 통해 1차분사밸브(24)에 의해 연료가 분사되고 동시에 가속페달과 연결된 가속케이블(23)의 당김력에 의해 공기조절밸브(21)가 상방으로 상승하여 흡입공기가 소정량 만큼 열려진 공기흡입구(20b)를 통하고, 1차분사밸브(24)가 연료를 분사하여 공기와 혼합된 혼합기가 도시안됨 흡입 매니폴드측으로 공급된다. 한편, 엔진 공회전시에는 엔진의 안정성을 고려하여 2차분사밸브(25)가 작동하여(이때 1차 분사밸브(24)는 작동하지 않는 상태이다)에어블리드(20c)측으로 유입된 공기가 분사연료와 혼합되어 연료의 무화를 촉진하고 적절한 혼합기가 흡입 매니플드측으로 그리고, 부하시에는 주행시에 작동하는 1차 분사밸부(24)와 함께 2차 분사밸브(25)가 작동하여 무화된 고농도의 혼합기가 공급되어 매니플드측으로 공급된다. 따라서 엔진의 회전속도와 부하조건에 따라 상기 2차분사밸브(25)가 단독, 또는 1차 분사밸브(24)와 병행 작동하여 그에 상응하는 적절한 혼합기가 공급됨으로써 엔진의 안정성 및 출력향상을 꾀할수 있다.In normal operation of the engine, fuel is injected by the primary injection valve 24 through a computer control device, and at the same time, the air control valve 21 is lifted upward by the pulling force of the acceleration cable 23 connected to the accelerator pedal. Through the air intake opening 20b in which air is opened by a predetermined amount, the primary injection valve 24 injects fuel, and a mixer mixed with air is supplied to the intake manifold side (not shown). On the other hand, when the engine is idle, the secondary injection valve 25 is operated in consideration of the stability of the engine (at this time, the primary injection valve 24 is not in operation), and the air flowing into the air bleed 20c is injected into the injection fuel. And the secondary injection valve 25 together with the primary injection valve 24, which is operated at the time of loading, to facilitate the atomization of the fuel and the appropriate mixer to the intake manifold side, and the high concentration of the atomizer It is supplied and supplied to the manifold side. Therefore, the secondary injection valve 25 may be operated alone or in parallel with the primary injection valve 24 according to the rotational speed and the load condition of the engine, so that an appropriate mixer is supplied to improve the stability and output of the engine. have.
상술한 바와 같이 스로트바디에 단독 또는 병행하여 작동하는 1, 2차분사밸브를 설치한 다중분사 방식을 채택함으로써 적정한 혼합기의 공급이 가능하고, 엔진의 안정성 및 출력향상을 가져오는 효과가 있다.As described above, by adopting the multi-injection method provided with the primary and secondary injection valves that operate alone or in parallel to the throat body, it is possible to supply an appropriate mixer, and to improve the stability and output of the engine.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019950050222A KR0140563B1 (en) | 1995-12-15 | 1995-12-15 | Fuel injector of an engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019950050222A KR0140563B1 (en) | 1995-12-15 | 1995-12-15 | Fuel injector of an engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR970045247A KR970045247A (en) | 1997-07-26 |
| KR0140563B1 true KR0140563B1 (en) | 1998-07-01 |
Family
ID=19440327
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1019950050222A KR0140563B1 (en) | 1995-12-15 | 1995-12-15 | Fuel injector of an engine |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR0140563B1 (en) |
-
1995
- 1995-12-15 KR KR1019950050222A patent/KR0140563B1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| KR970045247A (en) | 1997-07-26 |
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